1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/*
* Copyright 2011, Blender Foundation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* Contributor:
* Jeroen Bakker
* Monique Dewanchand
* Campbell Barton
*/
#include "COM_GaussianAlphaYBlurOperation.h"
#include "BLI_math.h"
#include "MEM_guardedalloc.h"
extern "C" {
# include "RE_pipeline.h"
}
GaussianAlphaYBlurOperation::GaussianAlphaYBlurOperation() : BlurBaseOperation(COM_DT_VALUE)
{
this->m_gausstab = NULL;
this->m_filtersize = 0;
this->m_falloff = -1; /* intentionally invalid, so we can detect uninitialized values */
}
void *GaussianAlphaYBlurOperation::initializeTileData(rcti *rect)
{
lockMutex();
if (!this->m_sizeavailable) {
updateGauss();
}
void *buffer = getInputOperation(0)->initializeTileData(NULL);
unlockMutex();
return buffer;
}
void GaussianAlphaYBlurOperation::initExecution()
{
/* BlurBaseOperation::initExecution(); */ /* until we suppoer size input - comment this */
initMutex();
if (this->m_sizeavailable) {
float rad = max_ff(m_size * m_data.sizey, 0.0f);
m_filtersize = min_ii(ceil(rad), MAX_GAUSSTAB_RADIUS);
m_gausstab = BlurBaseOperation::make_gausstab(rad, m_filtersize);
m_distbuf_inv = BlurBaseOperation::make_dist_fac_inverse(rad, m_filtersize, m_falloff);
}
}
void GaussianAlphaYBlurOperation::updateGauss()
{
if (this->m_gausstab == NULL) {
updateSize();
float rad = max_ff(m_size * m_data.sizey, 0.0f);
m_filtersize = min_ii(ceil(rad), MAX_GAUSSTAB_RADIUS);
m_gausstab = BlurBaseOperation::make_gausstab(rad, m_filtersize);
}
if (this->m_distbuf_inv == NULL) {
updateSize();
float rad = max_ff(m_size * m_data.sizey, 0.0f);
m_filtersize = min_ii(ceil(rad), MAX_GAUSSTAB_RADIUS);
m_distbuf_inv = BlurBaseOperation::make_dist_fac_inverse(rad, m_filtersize, m_falloff);
}
}
BLI_INLINE float finv_test(const float f, const bool test)
{
return (LIKELY(test == false)) ? f : 1.0f - f;
}
void GaussianAlphaYBlurOperation::executePixel(float output[4], int x, int y, void *data)
{
const bool do_invert = this->m_do_subtract;
MemoryBuffer *inputBuffer = (MemoryBuffer *)data;
float *buffer = inputBuffer->getBuffer();
int bufferwidth = inputBuffer->getWidth();
int bufferstartx = inputBuffer->getRect()->xmin;
int bufferstarty = inputBuffer->getRect()->ymin;
rcti &rect = *inputBuffer->getRect();
int xmin = max_ii(x, rect.xmin);
int ymin = max_ii(y - m_filtersize, rect.ymin);
int ymax = min_ii(y + m_filtersize + 1, rect.ymax);
/* *** this is the main part which is different to 'GaussianYBlurOperation' *** */
int step = getStep();
/* gauss */
float alpha_accum = 0.0f;
float multiplier_accum = 0.0f;
/* dilate */
float value_max = finv_test(buffer[(x) + (y * bufferwidth)], do_invert); /* init with the current color to avoid unneeded lookups */
float distfacinv_max = 1.0f; /* 0 to 1 */
for (int ny = ymin; ny < ymax; ny += step) {
int bufferindex = ((xmin - bufferstartx)) + ((ny - bufferstarty) * bufferwidth);
const int index = (ny - y) + this->m_filtersize;
float value = finv_test(buffer[bufferindex], do_invert);
float multiplier;
/* gauss */
{
multiplier = this->m_gausstab[index];
alpha_accum += value * multiplier;
multiplier_accum += multiplier;
}
/* dilate - find most extreme color */
if (value > value_max) {
multiplier = this->m_distbuf_inv[index];
value *= multiplier;
if (value > value_max) {
value_max = value;
distfacinv_max = multiplier;
}
}
}
/* blend between the max value and gauss blue - gives nice feather */
const float value_blur = alpha_accum / multiplier_accum;
const float value_final = (value_max * distfacinv_max) + (value_blur * (1.0f - distfacinv_max));
output[0] = finv_test(value_final, do_invert);
}
void GaussianAlphaYBlurOperation::deinitExecution()
{
BlurBaseOperation::deinitExecution();
if (this->m_gausstab) {
MEM_freeN(this->m_gausstab);
this->m_gausstab = NULL;
}
if (this->m_distbuf_inv) {
MEM_freeN(this->m_distbuf_inv);
this->m_distbuf_inv = NULL;
}
deinitMutex();
}
bool GaussianAlphaYBlurOperation::determineDependingAreaOfInterest(rcti *input, ReadBufferOperation *readOperation, rcti *output)
{
rcti newInput;
#if 0 /* until we add size input */
rcti sizeInput;
sizeInput.xmin = 0;
sizeInput.ymin = 0;
sizeInput.xmax = 5;
sizeInput.ymax = 5;
NodeOperation *operation = this->getInputOperation(1);
if (operation->determineDependingAreaOfInterest(&sizeInput, readOperation, output)) {
return true;
}
else
#endif
{
if (this->m_sizeavailable && this->m_gausstab != NULL) {
newInput.xmax = input->xmax;
newInput.xmin = input->xmin;
newInput.ymax = input->ymax + this->m_filtersize + 1;
newInput.ymin = input->ymin - this->m_filtersize - 1;
}
else {
newInput.xmax = this->getWidth();
newInput.xmin = 0;
newInput.ymax = this->getHeight();
newInput.ymin = 0;
}
return NodeOperation::determineDependingAreaOfInterest(&newInput, readOperation, output);
}
}
|
